Code review comment for lp:~kdub/mir/mesa-display-group

I had planned to split Mesa DisplayBuffer into a generic DRMDisplayBuffer and MesaDisplayBuffer. So it's then obvious and demonstrated that Mir doesn't need any OpenGL to work. And Mir could be run without any GL support at all (e.g. fullscreen system compositors without effects).

But this might make that more difficult...?

Not sure yet, but make sure not to create any coupling between swap buffers and posting. I've been slowly teasing them apart and will continue to do so more clearly in future.